Question

50p+10q=40 20p-10q=-4 elimination method​

Answer 1

Step-by-step explanation:

50p + 10q = 40

(+)20p - 10q = -4

______________

80p + 0 = 36

______________

80p = 36

p = 36/80 = 9/20

20p - 10q = -4

20 × 9/20 - 10q = -4

9 - 10q = -4

10q = 9 + 4 = 13

q = 13/10

p = 9/20 and q = 13/10

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